18390404204 has 12 divisors (see below), whose sum is σ = 32968163928. Its totient is φ = 8970928800.

The previous prime is 18390404117. The next prime is 18390404213. The reversal of 18390404204 is 40240409381.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56068142 + ... + 56068469.

It is an arithmetic number, because the mean of its divisors is an integer number (2747346994).

Almost surely, 2^18390404204 is an apocalyptic number.

It is an amenable number.

18390404204 is a deficient number, since it is larger than the sum of its proper divisors (14577759724).

18390404204 is a wasteful number, since it uses less digits than its factorization.

18390404204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112136656 (or 112136654 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 18390404204 in words is "eighteen billion, three hundred ninety million, four hundred four thousand, two hundred four".